During the month of December 2015, it was recorded a low surface activity level on the Cotopaxi volcano, which is characterized by pulsating gas emissions, white, from the crater, rising at exceptionally one kilometer hight. The presence of ash has been negligible, as we have noted in the past two field visits conducted around the volcano.
However, the internal activity remains at levels considered as moderate. Seismic activity remains similar to the levels recorded last month, with some type of LP earthquakes, small explosions and emission tremors. It should be stressed in particular the type of VT earthquakes, because their number is maintained between 30 and 100 earthquakes per day, similar to what was recorded during the previous period. Most of these VT type of events are of low amplitude.
Gas SO2 levels remained below 1000 tons / day, which is a considerable reduction from the 3,000 tons / day / recorded the month before.
Currently the volcano’s activity is limited to the scenario « 1 » described in the previous update. This scenario assumes that the volcano will continue to produce sweet emissions, possibly occasional explosions of small sizes, moderate and minor lahars that will stay in the national park area of Cotopaxi volcano.
January 11, 2016. Cotopaxi, Ecuador :
Source : IGEPN
Photo : José Luis Espinosa Naranjo.